/Engine/Plugins/MovieScene/MovieRenderPipeline/Source/MovieRenderPipelineCore/Public/Graph/MovieGraphNode.h
When a non-branch pin type is being evaluated on a node, the calling node will ask this node for the value connected to the given pin name. For example, a Branch node will call this function on whatever node is connected to the Conditional pin, and then will try to get a Boolean value out of the returnedUMovieGraphValueContainer.
virtual [UMovieGraphValueContainer](API\Plugins\MovieRenderPipelineCore\Graph\UMovieGraphValueContainer) * GetPropertyValueContainerForPin ( const [FString](API\Runtime\Core\Containers\FString) & InPinName ) const